<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
    private $_id;
    
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function authenticate()
	{
	    $username=trim(strtolower($this->username));
	    $user=User::model()->find('LOWER(username)=:name',array(':name' => $username));
	    if($user===null){
	        $this->errorCode=self::ERROR_USERNAME_INVALID;
	    }else if(!$user->validatePassword(trim($this->password))){
	        $this->errorCode=self::ERROR_PASSWORD_INVALID;
	    }else{
            $this->_id=$user->id;
            $this->username=$user->username;
// 	                $this->setState('roleId',$user->role_id);
// 	                $role = Role::model()->find('id=:id',array(':id'=>$user->role_id));
// 	                $this->setState('roleLevel',$role->role_level);
// 	                $this->setState('nickname',$user->nick_name);
            $this->errorCode=self::ERROR_NONE;
	    
            $result = UserLog::model()->findByAttributes(array('user_id'=>$user->id));
            if($result){
                $userLog = $result;
            }else{
                $userLog = new UserLog;
            }
            $userLog->user_id = $user->id;
            $userLog->user_name = $user->username;
            $userLog->login_time = time();
            $userLog->last_time = time();
            $userLog->create_time = time();
            $userLog->save();
        }
        return $this->errorCode==self::ERROR_NONE;
	    
	    
	    
	    /*
	     * demo
	     */
// 		$users=array(
// 			// username => password
// 			'demo'=>'demo',
// 			'admin'=>'admin',
// 		);
// 		if(!isset($users[$this->username]))
// 			$this->errorCode=self::ERROR_USERNAME_INVALID;
// 		elseif($users[$this->username]!==$this->password)
// 			$this->errorCode=self::ERROR_PASSWORD_INVALID;
// 		else
// 			$this->errorCode=self::ERROR_NONE;
// 		return !$this->errorCode;
	}
}